DNS Lookup

Uses external API

Look up DNS records for any domain: A, AAAA, MX, TXT, CNAME, NS, SOA.

Look up DNS records for any domain instantly. Check A, AAAA, MX, TXT, CNAME, NS, and SOA records using Google’s public DNS API. Essential for developers and sysadmins debugging DNS issues.

DNS Lookup tool

⚠️

This tool sends the domain name to dns.google (Google's public DNS API) to resolve records. No data is stored by ToolDock.

🌐 Uses external API · See disclaimer above

How to use

  1. Enter a domain

    Type any domain name (e.g. example.com) and press Enter or click Look up.

  2. Filter record types

    Select specific record type pills (A, MX, TXT, etc.) or leave All selected to query every type.

  3. Copy values

    Click the copy button on any record value to copy it to your clipboard.

Common use cases

  • Debugging email delivery failures — Check MX and TXT records to verify SPF, DKIM, and DMARC are correctly configured on a domain.
  • Verifying DNS propagation after a migration — Look up A and CNAME records to confirm DNS changes have propagated globally after moving a site.

Examples

  • Check MX records

    Verify mail server configuration for a domain.

    Input
    gmail.com
    Output
    MX: alt1.gmail-smtp-in.l.google.com, alt2.gmail-smtp-in.l.google.com …

  • Check A record

    Find the IPv4 address for a domain.

    Input
    cloudflare.com
    Output
    A: 104.16.132.229, 104.16.133.229

Frequently asked questions

Which DNS server does this use?
Queries go to dns.google (Google Public DNS, 8.8.8.8). Results may differ from your ISP’s DNS due to caching and propagation.
Why are my records not showing?
DNS changes can take up to 48 hours to propagate. NXDOMAIN means the domain does not exist in Google’s DNS cache yet.
Is my domain sent to a server?
Yes — the domain is sent to dns.google. No data is stored by ToolDock.

Key concepts

MX record
Mail Exchange record — specifies the mail servers responsible for accepting email for a domain.
TTL
Time To Live — the number of seconds a DNS record is cached by resolvers before they re-query the authoritative nameserver.

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